These fans
consist of nylon fixed pitch blades that are clamped between two light
alloy hub halves. The blades are available in both clockwise and
anticlockwise direction with angles of 25, 30, 35, 40, 40 and 45 degrees.
The hubs are available in 6, 8, 10, 12, 14 and 20 blade, only the 8 and 10
blade sizes are kept in stock. Other sizes to order. Max fan dia 10 blade
hub is 670mm

Blades

Type 4Z
Adjustable Pitch

These fans
consist of nylon adjustable pitch fan blades clamped between light alloy
hub halves. 6 hub sizes are available 5, 7, 8, 9, 12 and 16 blade. Blades
are available in both clockwise and anticlockwise direction. The 4Z blade
is a broader and longer blade than the type 3 which makes it more suitable
for absorbing high power and integrated crafts. Max. fan diameter 9 blade
hub 820mm, 12 blade hub 900 mm, 16 blade hub 990 mm. All fan hubs are
clamped together using M6 * 30 long set screws and nyloc nuts. 9 blade hub
double female requires 18 screws

These fans
consist of nylon adjustable pitch fan blades clamped between light alloy
hub halves. These blades use the same hubs as the 4Z blades. The blades
are the same profile as type 3 blades.

Blades

Multiwing type
7XL

The 7X fan
blades are the largest fan blades in the Multi-Wing range, they are
suitable for the larger cruising hovercraft. There are two hub sizes
available in 6 and 8 blade sizes. The pitch is adjustable. Maximum fan
diameter 6 blade hub 1510 mm and 8 blade hub is 1640 mm.

Blades

Truflo Fans

These are nylon
fan blades clamped in a split aluminium fan hub. Blades are available in
left and right hand rotation. The blades are wider than the Multiwing 5Z
and give a similar performance to the 5Z blade. (Recommended max power of
fan 40hp). Maximum fan diameter 925mm.

Blades

Multiwing type
7W

The 7XL has now
been replaced by the 7W. Blade characteristics are largely unchanged.